Sterilizer.



G. F. HALL.

STERILIZEB.

APPLICATION rum) NOV. so, 1008.

1,1 14,880. Patented 0015.211914] 2 BHEETS-SHEET 1.

Q -oooooooooooooooooo0 WITNESSES." INVENTO/i ATTORNEY G. F. HALL.

STBRILIZER.

APPLICATION FILED NOV. 30, 1908.

1, 1 14,880, Patented Oct-27, 1914.

2 SHEETS-SHEET 2.

g. gm a fox C GHQ Imus GEORGE I. HALL, OF ERIE, PENNSYLVANIA.

STERILIZER.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed November 30, 1908. Serial No. 465,057.

I To all whom it may concern:

Be it known that I, GEoRoE F.HALL,a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Sterilizers, of which the following is a specification.

This invention relates to sterilizers, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claim.

More particularly the invention relates to devices for supplying to the sterilizer a disinfecting material which is delivered to the sterilizer in the form of vapor or gas.

The invention is illustrated in the accompanying drawings as follows:

Figure 1 shows a perspective viewof a sterilizer. Fig. 2 a perspective view, a part being broken away to better show the construction. Fig. 3 a section of the ejector. Fig. 4 a section of the valves controlling the formaldehyde and ammoniapassa es. Fig. 5 a section throu h the formalde yde and ammonia receptac es, and the valves controlling the same.

1 marks the sterilizer chamber and 2 the steam jacket surrounding the chamber. These are of the ordinary construction. A steam pipe 3 leads through the jacket to the chamber 1. It is connected to the main steam pipe 4 and controlled by the valve 5. A steam ipe 6 leads to the space 2, and is connected with the main pipe 4 and controlled by a valve 7. A pipe 7 leads from the chamber 1 to a point wlthout the sterilizer where it is connected with an ejector 10. A steam pipe 8 controlled by the valve 9 leads to the nozzle 11 of the ejector (see Fig. 3). The nozzle 11 is directed to the suction nozzle 12 of the ejector inthe ordinary manner. It will readily be observed by these connections, that live steam may be turned into the chamber 1 or cut off from the same as desired. Live steam may be turned into the jacket or space 2 and controlled as desired, and steam and air may be exhausted from the chamber 1 by means of the ejector 10, and the action of the ejector may be carried to such an extent as to reduce the pressure of the chamber below atmospheric pressure.

The formaldehyde receptacle 14 and the ammonia receptacle 13 are arranged outside of the jacket. These are connected by the pipes 16 and 15 respectively with the interior of the chamber. These pipes extend through the jacket and then preferably along the jacketed wall within the chamber. The pipes are also preferably higher at the point of opening in the chamber than at some intermediate oint, for purposes hereafter described. Tiese pipes 15 and 16 are controlled by the valves 17 and 18 respectively.

through atmospheric pressure on the liquid in the receptacle. As the liquid is forced into the pipe 15 or 16 it is heated through the proximity of the pipes with the steam heated jacket, and thus vaporized. By makin the point of delivery of the pipes somew at higher than some intermediate point any drip of liquid is prevented. This apparatus therefore operates in a manner distinguished from ordinary Vaporizers used on sterilizers, in that the liquid is forced into the pipes before being vaporized, but is delivered to the chamber in the form of vapor. B introducing the filter any air that may ollow the liquid into the sterilizer chamber may be filtered.

It will be noted that in this a paratus the vaporizing device is just as e cient when the receptacle is nearly empty as when the receptacle is filled and vice versa; so that a uniform feed may be had. 7

While I have preferred to create the differences in pressure necessary to forcing the liquid into the pi es by reducing the pressure in the cham er I do not wish to be limited to this method.

. What I claim as new is:

In a sterilizer, the combination of a mmeec lln testimony whereof l have hereunto set sterilizing chamber; a receptacle for a, steril- I my hand in the presence of two subs'crlbing izing" medlum; a, conduit connecting sai receptacle with the chamber; a, cover for the witnesses. receptacle; a filter secured to the cover and GEURGE F. HALL. ha /111g an air connection through it to the 'Witnesses: receptacle; and means for creating an excess G, B, fll AYEB H, (3. Lone.

cf pressure enthe liquid. in the receptacle. 

